Be a Tier 3 Engineer on one of the most high profile and significant cybersecurity systems in the US Tellenger, Inc., seeks an experienced Tier 3 Engineer to support the operations and maintenance for the network and system environment of the Department of Homeland Security's Continuous Diagnostics Mitigation (CDM) project, which is being used by every Federal agency. This is an important project for our company and will be a resume builder for you. In this role you will leverage a mix of infrastructure and application expertise to support systems administration, routine systems patching, application upgrades, and proactive monitoring of system components to assess and improve system performance, including the ingest of large datasets on a daily basis. US Citizen Only - This is a mandatory requirement of our contract. Candidate must be able to obtain TS/SCI Clearance and DHS Suitability. Position Responsibilities: Working alongside a dynamic operations team that includes Tier 1 Help Desk, Tier 2 Engineers, DevOps Engineers, and technical leadership, the Tier 3 Engineer will support the existing windows-based COTS application and ultimately will need to be comfortable with transitioning to a completely new Linux platform environment leveraging Elasticsearch. The successful candidate will bring experience managing backend components and operations. The Tier 3 Engineer will provide escalation support with hot fixes to applications as needed and will contribute to the engineering tasks related to the new platform as well as supporting the legacy system DevOps staff. The team will routinely interact with government stakeholders to communicate status, issues and progress. You'll be working with our talented team in Fairfax, VA developing a leading-edge enterprise system that will protect Federal IT systems across the US It's an exciting project that will help many people. You will work onsite at the project team's location in Fairfax, VA, and must have an active TS/SCI and be able to pass a government background check to achieve DHS Suitability. The successful candidates will have the following experience and required skills:Bachelor's Degree (IT or relevant STEM degree)3+ years administering and troubleshooting 'N' tier web applications to include database servers, services servers, and web servers in Windows and Linux environments3+ years Database Management (SQL Server, PostgreSQL, ElasticSearch)3+ years managing the deployment, maintenance and operations of web-based systems in both Windows and Linux environmentsDemonstrated ability to apply an understanding of systems administration and operations to proactively identify and remediate day-to-day technical and operational challengesExperience supporting web-based systems performance analysis and optimizationSystem programming experience with Python/Bash/PERLExperience with Elastic Common Schema or Splunk Common Information ModelExperience with Splunk forwarders, ELK (Elasticsearch, Kafka, Logstash), Beats, or ES/SplunkExperience creating data pipelines to include ETL and streaming data such as log data or tool/sensor data to indexesExperience with hands on configuration, tuning, and operating of distributed data storage stacksExperience querying data to include aggregations, calculations, and producing metrics from dataUnderstanding current cyber exploits, attack methodology, and detection techniques using a wide variety of security products including COTS and open sourceCloud workload experience (Amazon Web Services, Azure)Experience working in an Agile development teamExperience with code repositories, esp Git/GitHubExperience with ALM tools, esp JIRAProven ability to interact with customer stakeholders, including senior leadership It's a plus if you have:Experience with CI/CD environmentsExperience working with RSA Archer GRCExperience working as a Cyber Security professionalDHS Suitability Location Requirements: Willing work full-time onsite in Fairfax, VA Benefits: Great work environment, full health insurance, 15 days PTO, Federal holidays, tax-deferred retirement savings plan with company match program and opportunities for advancement. Start Date: Immediate About Tellenger: Tellenger, Inc. is a is a CMMI Level 3 software design and IT strategy firm that specializes in developing complex, custom software to help Government agencies achieve their objectives. We craft custom web-based software apps ranging from complex, enterprise-level builds to traditional websites and mobile technology. Our strength is aligning an organization's objectives to the right technology, then building the solution. Founded in July 2007, we have multiple long-term government contracts as well as private sector clients making for interesting and diverse work. An outcome of the quality of our work has resulted in the company achieving significant growth each year in business.